With a serial number over 295000 you are looking for a very late model. Most I have seen on ebay are in very good condition. Serial number over 298 is an Aurum or Platin and good luck finding something cheap there.
The taking lens and viewing lens are a matched set when a Rollei is new. There is very slight variance from lens to lens. If you take the front cover off a Rollei you will see a number on both taking lens and viewing lens that should match. If it doesn't it means that one of the lenses was probably replaced... which isn't a good thing.
You might consider getting an older 2.8F with Xenotar instead of the 295... white face.